Improvement in pumps



following is a specification. j

A annusare one y can.

errantes L.; Mennitti, or WATnn'rowN., NEW Your.

Letters Purchena. 106,072, daad August 2,1870.

IMPnovEMnN'i IN PUMPS.

-v The Schedule referred to in theseA Letters Patent and making part of the same' `To all whom.v it @neig/concern;

y Be it known that I; CHARLES L. MERRILL, "of the `city of Watertown, `in the county of4 Jeierson and `State of New Yorin have invented certain new and useful Improvementssin` Force-Pumps,` of which the i j Natureend Objectslofmg/nvention. l The rst part of my invention relates to the extending the length of `the lower or movable, plunger of my pump, and tothe decreasing the diameter bf `said plunger to such an extentthat the cubic amountv of water collected andthrown upward by the said extended portion of saidplungershall equal the cubic amount of water collected aiidthrown upward by the upper and stationary'plunger, the object of this vpart ot myinvention being to cause an'equal quantity ot' water to be 'forced up through thepump and out at thenozzle of said pump at each elevation and depression of the rods of `said pump, and thus, with the aid of the air-chambers, causing an even and continuous stream of water to be thrown from saidnozzle.

The second part of vmy ginvention relates to the combination of an air-chamber with a double dome andthe levers, in sucha manner that the steadiness of the stream thrown by said pump shall beincreased,

i and, secondly, that a broader base shall `be obtained for the axes of the levers of the pump to rest upon, theobjeet of having a broad `base for the levers being, to prevent the pnmp'and its attachments from being twisted and sprung,`:by some one working the leversof the pump, by having' hold at the extreme end of one ofthe handles, technically called brakes, .by whiclithe levers are worked.

` Description of Accompanying Drawing.

Figure lis aside view cfa forccfpunip. embodying bottom 4of the cylinder (Land acts `as a plunger to `the cylinder E. `D is the subjeetof the first part ofV my invention. `.lhe stroke of the plunger D,- in com` bination `withthe stroke of the cylinder E, is twice asv long aslthe stroke of C upon A; also, the plunger D is smaller in diameter than the `plunger A, in order Vthat the cubic quantity of water received andthrown by each of said plungers, or D, shall be equal.

E isthe lower cylindenthe bottom` of which ts into the well.A

In thebottom of the cylinder Athere is a valve,

V, and in the bottom of plunger D there is a valve,

V', and inthe bottom of the cylinder E there is `a valve, V". v

M is the rod or bail, attachedat its lower ends S S by trnnnions, P 4P, to the. top of the cylinder E, and at its upper end to, the lever of' the force-pump.

N is the rod or baiLatta'ched at its lower ends S S1 bytrnnnious, P P, to the top of the cylinder C, and at its upper end'to a levervof the force-pump. t

P P are the trunuions upon which the ends S S of the hails M N turn. f

R Il. are the lugs, inclined upward and outward from` the cylinder E, or from the plunger D, s o as to hold the ends S S upon their respective trunnions.

K K are ears or braces projecting from the top of the sides4 of thei upper plunger A.

The outer ends Z Z of these braces are long enough to'come against the sides of the well. v H is the straight pipe of the force-pump, connect- -ing the top vot' the upper plunger A to thebottonr L is the air-chamber, dividing toward `its -top into two bulbs or air-chambers.- The tops ot' the two aii'- chambers form the foundation upon which the axes of thelever's of the force-pump rest.

Mode -of Operation..

The method in which my improvemes/gperatens ,Yv Y

as follows z Y When, by the leversat the top of the pump, vthe bail M and the movable -cylinder E are depressed'upon the plunger D, (into the well,) the bail N and the movable cylinder O will, at the same time, be-raised u pon the plunger A. The vacuum' thus caused in the cylinder E, will be at once `lled lwith afcolnmn of water `from the well beneath, entering through the valve V;

all `water, previously forcedthrough plunger D in to 'cylinder G, will be forced at the 'same time into the plunger A.

Upon reversing the levers at the top of the pump,

the bail M and the cylinder Erwill be raised toward C,

and theibail Nand its plunger D will bedepressed away from A toward the cylinder E. The eiect of this is' to forcethe whole oi', the water just collected in the cylinder E, into the plunger D and cylinder O, and one-half of this saine body of water will beat the same time, forced on up into the plunger A, and thus, by raising and depressing the levers, with the `aid of the airfchambers, a continuous, and steady and rapid stream ot' water is thrown from thel nozzle of the pump. y

The double dome of'the air-chamber operates to increase the elasticity of the air without said chamber, for the reason that the air within said dome operates :is a double spiral spring, and thus increases the steadinessoi the stream of the force-pump. This double dome of the air-chamber, as a base for the axes of'the levers, spreads the fulcrnm centers of the brakes and keeps said brakes from rocking.

In order to attach the ends S S of the hails M N to their respective trnnnions, we laythe bails at right angles to the length of the cylinder; the ends S S of the bails are thenslipped onto their respective trunnions, P P, 8:0. 'lhe bails are. then turned up between the lugs It R, and the cylinder to which the bailsrare attached. These lugs, then, keep the ends of the bails in their places.

It'. it is desired to unship the bails, let them be turned at right angles to the sides of the cylinders to which they are attached, and their respective lugs will no longer held them u pon their trnnnions, and theyA may be easily taken off from Said trnnnions.

The ends O 0 of the braces or ears K K are fastend to lthe sides of the well, and operate to keep the pump so steady and firm that it will not be shaken by the movement of the levers.

Claims.

I claim- I 1. The combination of plunger A, cylinder C, plunger D, with cylinder E, when constructed to operate substantially as described, and for the `purposes heteinbefore set fcrth.

2. The arrangement oi' the levers X X upon the air-chamber L, having a double dome, so constructed as to form a broad seat for the levers, substantially as described and for the purposes hereinbefore set forth- CHARLES L. MERRILL.

Witnesses:

ABNER B. GARDNER, JAMES G. FISHER. 

